Spirit AeroSystems, Boeing amend supply agreement Spirit AeroSystems (SPR) disclosed in a regulatory filing that on April the company entered an agreement with Boeing (BA) amending Spirit’s long-term supply agreement with Boeing covering products for Boeing’s B737, B747, B767 and B777 commercial aircraft programs. The amended agreement establishes pricing terms for recurring products for the period commencing on April 1 and ending on December 31, 2015. Prices will continue to be adjusted each year based on a quantity-based price adjustment formula described in the agreement, whereby average per-unit prices are higher at lower volumes. Prices continue to be subject to other adjustments provided for under the agreement. The new pricing terms will not be applied to the period prior to April 1. Spirit does not expect the amended agreement to have a material impact on previously announced EPS guidance.